xref: /openbmc/linux/net/sctp/debug.c (revision 75202e76)
1 /* SCTP kernel reference Implementation
2  * (C) Copyright IBM Corp. 2001, 2004
3  * Copyright (c) 1999-2000 Cisco, Inc.
4  * Copyright (c) 1999-2001 Motorola, Inc.
5  * Copyright (c) 2001 Intel Corp.
6  *
7  * This file is part of the SCTP kernel reference Implementation
8  *
9  * This file is part of the implementation of the add-IP extension,
10  * based on <draft-ietf-tsvwg-addip-sctp-02.txt> June 29, 2001,
11  * for the SCTP kernel reference Implementation.
12  *
13  * This file converts numerical ID value to alphabetical names for SCTP
14  * terms such as chunk type, parameter time, event type, etc.
15  *
16  * The SCTP reference implementation is free software;
17  * you can redistribute it and/or modify it under the terms of
18  * the GNU General Public License as published by
19  * the Free Software Foundation; either version 2, or (at your option)
20  * any later version.
21  *
22  * The SCTP reference implementation is distributed in the hope that it
23  * will be useful, but WITHOUT ANY WARRANTY; without even the implied
24  *                 ************************
25  * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
26  * See the GNU General Public License for more details.
27  *
28  * You should have received a copy of the GNU General Public License
29  * along with GNU CC; see the file COPYING.  If not, write to
30  * the Free Software Foundation, 59 Temple Place - Suite 330,
31  * Boston, MA 02111-1307, USA.
32  *
33  * Please send any bug reports or fixes you make to the
34  * email address(es):
35  *    lksctp developers <lksctp-developers@lists.sourceforge.net>
36  *
37  * Or submit a bug report through the following website:
38  *    http://www.sf.net/projects/lksctp
39  *
40  * Written or modified by:
41  *    La Monte H.P. Yarroll <piggy@acm.org>
42  *    Karl Knutson          <karl@athena.chicago.il.us>
43  *    Xingang Guo           <xingang.guo@intel.com>
44  *    Jon Grimm             <jgrimm@us.ibm.com>
45  *    Daisy Chang	    <daisyc@us.ibm.com>
46  *    Sridhar Samudrala	    <sri@us.ibm.com>
47  *
48  * Any bugs reported given to us we will try to fix... any fixes shared will
49  * be incorporated into the next SCTP release.
50  */
51 
52 #include <net/sctp/sctp.h>
53 
54 #if SCTP_DEBUG
55 int sctp_debug_flag = 1;	/* Initially enable DEBUG */
56 #endif	/* SCTP_DEBUG */
57 
58 /* These are printable forms of Chunk ID's from section 3.1.  */
59 static const char *sctp_cid_tbl[SCTP_NUM_BASE_CHUNK_TYPES] = {
60 	"DATA",
61 	"INIT",
62 	"INIT_ACK",
63 	"SACK",
64 	"HEARTBEAT",
65 	"HEARTBEAT_ACK",
66 	"ABORT",
67 	"SHUTDOWN",
68 	"SHUTDOWN_ACK",
69 	"ERROR",
70 	"COOKIE_ECHO",
71 	"COOKIE_ACK",
72 	"ECN_ECNE",
73 	"ECN_CWR",
74 	"SHUTDOWN_COMPLETE",
75 };
76 
77 /* Lookup "chunk type" debug name. */
78 const char *sctp_cname(const sctp_subtype_t cid)
79 {
80 	if (cid.chunk <= SCTP_CID_BASE_MAX)
81 		return sctp_cid_tbl[cid.chunk];
82 
83 	switch (cid.chunk) {
84 	case SCTP_CID_ASCONF:
85 		return "ASCONF";
86 
87 	case SCTP_CID_ASCONF_ACK:
88 		return "ASCONF_ACK";
89 
90 	case SCTP_CID_FWD_TSN:
91 		return "FWD_TSN";
92 
93 	default:
94 		break;
95 	}
96 
97 	return "unknown chunk";
98 }
99 
100 /* These are printable forms of the states.  */
101 const char *sctp_state_tbl[SCTP_STATE_NUM_STATES] = {
102 	"STATE_EMPTY",
103 	"STATE_CLOSED",
104 	"STATE_COOKIE_WAIT",
105 	"STATE_COOKIE_ECHOED",
106 	"STATE_ESTABLISHED",
107 	"STATE_SHUTDOWN_PENDING",
108 	"STATE_SHUTDOWN_SENT",
109 	"STATE_SHUTDOWN_RECEIVED",
110 	"STATE_SHUTDOWN_ACK_SENT",
111 };
112 
113 /* Events that could change the state of an association.  */
114 const char *sctp_evttype_tbl[] = {
115 	"EVENT_T_unknown",
116 	"EVENT_T_CHUNK",
117 	"EVENT_T_TIMEOUT",
118 	"EVENT_T_OTHER",
119 	"EVENT_T_PRIMITIVE"
120 };
121 
122 /* Return value of a state function */
123 const char *sctp_status_tbl[] = {
124 	"DISPOSITION_DISCARD",
125 	"DISPOSITION_CONSUME",
126 	"DISPOSITION_NOMEM",
127 	"DISPOSITION_DELETE_TCB",
128 	"DISPOSITION_ABORT",
129 	"DISPOSITION_VIOLATION",
130 	"DISPOSITION_NOT_IMPL",
131 	"DISPOSITION_ERROR",
132 	"DISPOSITION_BUG"
133 };
134 
135 /* Printable forms of primitives */
136 static const char *sctp_primitive_tbl[SCTP_NUM_PRIMITIVE_TYPES] = {
137 	"PRIMITIVE_ASSOCIATE",
138 	"PRIMITIVE_SHUTDOWN",
139 	"PRIMITIVE_ABORT",
140 	"PRIMITIVE_SEND",
141 	"PRIMITIVE_REQUESTHEARTBEAT",
142 };
143 
144 /* Lookup primitive debug name. */
145 const char *sctp_pname(const sctp_subtype_t id)
146 {
147 	if (id.primitive <= SCTP_EVENT_PRIMITIVE_MAX)
148 		return sctp_primitive_tbl[id.primitive];
149 	return "unknown_primitive";
150 }
151 
152 static const char *sctp_other_tbl[] = {
153 	"NO_PENDING_TSN",
154 	"ICMP_PROTO_UNREACH",
155 };
156 
157 /* Lookup "other" debug name. */
158 const char *sctp_oname(const sctp_subtype_t id)
159 {
160 	if (id.other <= SCTP_EVENT_OTHER_MAX)
161 		return sctp_other_tbl[id.other];
162 	return "unknown 'other' event";
163 }
164 
165 static const char *sctp_timer_tbl[] = {
166 	"TIMEOUT_NONE",
167 	"TIMEOUT_T1_COOKIE",
168 	"TIMEOUT_T1_INIT",
169 	"TIMEOUT_T2_SHUTDOWN",
170 	"TIMEOUT_T3_RTX",
171 	"TIMEOUT_T4_RTO",
172 	"TIMEOUT_T5_SHUTDOWN_GUARD",
173 	"TIMEOUT_HEARTBEAT",
174 	"TIMEOUT_SACK",
175 	"TIMEOUT_AUTOCLOSE",
176 };
177 
178 /* Lookup timer debug name. */
179 const char *sctp_tname(const sctp_subtype_t id)
180 {
181 	if (id.timeout <= SCTP_EVENT_TIMEOUT_MAX)
182 		return sctp_timer_tbl[id.timeout];
183 	return "unknown_timer";
184 }
185